Ring spinning and twisting machines



Jan. 27, 1959 A. J. EIDLOW ETAL RING SPINNING AND TWISTING. MACHINES Filed Oct. 11, 1956 2 Sheets-Sheet 1 MM m NE E n N, w n M .A 7 3 Cl Mar/on Mar/r0 w/cz Dav/d /sa0c Morgan. By fhe/r affomeys United States Patent Alan J. Eidlow, New Malden,

Wootton, and David I. assignors to Courtaulds British company Application October 11, 1956, Serial No. 615,300

Claims priority, application Great Britain October 18, 1955 Claims. 01. 57-34 Marion Markowicz, Leek Morgan, Coventry, England, Limited, London, England, a

This invention relates to ring spinning and twisting machines and particularly to the winding of transfer tails on the yarn packages produced by such machines.

Transfer tails are provided on yarn packages to enable the yarn on such packages to be connected together when the packages are unwound as in creeling, so that a continuous supply of yarn can be maintained without stopping the machinery. The tails. which consist of a relatively few turns of yarn on the package-holder or former separate from the main yarn package, are formed at the beginning of the winding operation on a part of the package-holder or former which is outside the normal limits of the stroke of the traverse mechanism which lays the yarn in layers in the package.

One way of winding such tails on a ring spinning machine is to displace the traverse of the ring relative to the winding spindle so that at one end of the traversing stroke the ring leads the yarn on to a part of the former on which the yarn is not normally wound. In effect the limit at one end of the traverse stroke is extended although the traverse stroke is not itself made longer since the limit at the other end is moved correspondingly. In one such type of tail winding mechanism the ring is moved by hand and held in position by hand until the tail has been wound, after which it is released and returned to its normal position by a spring or by gravity.

The present invention enables the operator to displace the ring and then attend to other tasks while the ring is held mechanically in the displaced position until a given point in the traversing cycle when it is released and returned to its normal position.

The invention consists therefore in a ring spinning and twisting machine having a rotatable spindle and a ring, the ring and spindle being axially reciprocable with respect to each other, comprising, to enable a tail to be wound about a part of the spindle not normally traversed by the ring, a mechanism to give the ring an additional relative axial displacement including a latch to maintain this displacement, a part being provided movable relatively to the latch and adapted to disengage the latch at a predetermined point in the traversing cycle.

The invention is applicable equally to the type of ring spinning machine in which the ring is normally stationary and the traversing mechanism moves the spindle, and to the type of machine in which the spindle does not move axially and the ring is reciprocated.

The axial displacement of the ring may be effected by a cam which may also be shaped so as to act as a latch mechanism although a separate latch mechanism may be provided.

To wind a tail the ring is displaced by hand into the tail winding position at some convenient point in the traversing cycle and is held there by the latch mechanism. When the ring passes beyond the normal limit for its traverse due to this displacement, the tail is wound and at a convenient point thereafter a member associated with the traversing mechanism disengages the latch and allows the ring to return to its normal position so that the normal traversing stroke is restored.

Three examples of ring spinning and twisting machinery according to the invention are shown in the drawing accompanying the provisional specification, in which:

Figure 1 is a vertical section through a ring and traverse rail with the ring in the normal position;

Figure 2 is similar to Figure 1 but shows the ring in the displaced position and also shows a bobbin in position on the spindle;

Figure 3 shows a machine in which the normal traversing motion is applied to the spindle;

Figure 4 shows an alternative form of traversing ring in elevation; and

Figure 5 shows the ring of Figure 4 in plan.

In Figure 1, the ring 5 on which is mounted a traveller 6 is carried in a ring holder 4 which is pivoted to a rail 3 so that it can be turned about a vertical axis so that the operatives hand is not caught when threading up. The rail 3 is supported on a plunger 2 which can slide vertically in a channel-shaped ring rail 1 which may be reciprocated vertically in known manner by a mechanism which, for clarity, is not shown in the drawing. The rail 3 is screw-threaded on the plunger 2 so that its position may be adjusted.

A cam 8 which has a U-shaped construction embraces the lower end of the plunger 2 to which it is pivoted by the pin '9. An arm M is pivoted to the cam as shown.

In Figure 1, the cam is shown in position for normal winding in which the ring 5 is supported by a spring 7 in its normal position determined by the cam 8. In this position yarn from the traveller is wound on the barrel 13 of the bobbin (see Fig. 2). To lower the ring so that yarn is wound in the groove 15 on the flange 14 of the bobbin to form a tail, the upper end of the plunger 2 is pushed down, whereupon the cam 8 turns under its own weight into the position shown in Figure 2, and the face 16 of the cam abuts on the underside of the ring rail 1 to hold the ring down. As winding proceeds, the ring at the bottom of its traverse stroke reaches the position shown in Figure 2, and the yarn is wound into the groove 15 of the bobbin which is driven by the spindle 12. As the ring rail 1 approaches its lowermost position the arm 10 encounters a projection 11 on a fixed part of the machine. The arm 10 is pivoted so that it may turn upwards, and thus it moves past the projection 11 without effecting the position of the cam 8. On the subsequent upward stroke, however, the arm 10 engages the underside of the stop 11 and as it cannot turn downward relative to the cam beyond the position shown, the cam 8 is turned into its original position shown in Figure l, and the spring 7 raises the ring 5 to its original position.

In Figure 3 the spindle 2%} is mounted in bearings 21 in a traversing rail 19. The spindle carries a whorl 22 which is driven by engagement with a continuous belt 23. The former is similar to the bobbin in Figure 2 having a barrel 25 and grooved flange 26.

The ring is mounted on a support 27 fixed to a vertical plunger 29 which can slide vertically in brackets 30 and 31 fixed to the machine frame 28. The plunger carries a flange 33 which is urged upwards into engagement with a cam 35 by a spring 34 acting upon a bush 32 on the plunger. In the position shown in Figure 3 the cam 10- cates the ring for normal Winding. To wind a tail, the plunger 29 is pressed down against the spring 34, and the weight of the cam 35 causes it to turn on a shaft 36 and lock the plunger in the lower position in which it holds the ring correctly for winding a tail in the groove flange 26 of the bobbin 25. The shaft 36 carries an arm 37 which turns with the cam until it extends into the path of the traversing rail 19. When the traversing rail reaches its lowermost position it engages the arm 37 pushing the cam out of its locking position until, under the action of the spring 34, it is returned to the position shown in Figure 3 and the ring rail is raised into its original position for normal winding. p

A third example of the invention is shown in Figures 4 and 5. A traversing ring rail 38 has a ring 39 and traveller 40. The ring' 39 has pins 41 slidingin cam slots 42 in the rail so that on rotating the ring by hand with respect to the rail by means of the hook 43, the ring 39 is depressed against the force of spring 44 tending to return it. Depending from the ring is a plate 45 attached to the ring by {bolts 55 passing through a slot 56 in the rail 38 so that the plate is adjustable. The plate forms a locking device with the adjacent assembly indicated generally at 46. This consists of a rectangular member 47 free to slide on a bolt 48 fixed to the ring rail 38. The member has three projecting arms, a horizontal arm 49 overlapping plate 45, a downwardly projecting arm 50 and an arm 51 projecting upwards into the hollow bore of a bolt 52 fixed to the ring rail. Above the arm 51 is a spring 53 held in the bore by'a screw 54. This spring 53 acts to urge the member 47 downwards, but in the position shown, which is the position for normal winding, the member 47 is held by, the overlap of arm 49 with the plate 45.

The ring 39 and ring rail 38 traverse vertically with respect to a fixed spindle and bobbin (not shown but similar tolthat of Figure 2). To wind a tail, the ring 39 is simultaneously rotated and depressed by hand using the hook 43 while the rail is moving downwardly. As will be seen from Figure the rotation of the ring 39 causes the plate 45 to move downwards followed by the arm 49 and member 47 under the action of the spring 53. This also reduces the overlap of the plate 45 and the arm 49 until, when the ring is at its lower limit the plate 45 moves from beneath the arm 49 and the plate and arm then abut edge to edge in the same horizontal plane. This locks the ring in its depressed position against the force of spring 44 tending to return it.

The depression of the ring extends the traverse so that a tail is wound on the bobbin flange as the ring rail nears the bottom of its traverse. At the lowest point of the traverse the downwardly projecting arm 50 of member 47 strikes an adjustable stop on the fixed spindle rail of the machine forcing the member 47 upwards against the pressure of spring 53. This releases the edge of plate from its contact with the edge of arm 49 and spring 44 rotates and lifts the ring 39 and plate 45 till the position shown in the figures, which is the position for normal winding, is restored.

What we claim is:

l. A ring spinning and twisting machine having a rotatable spindle, a ring and a traverse mechanism to cause relative axial reciprocation between the ring and spindle, comprising, to enable a tail to be wound about a part of the spindle not normally traversed by the ring, a manually engageable mechanism to givethe ring an additional relative axial displacement including-a latch engageable to maintain this displacement, and a part movable auto matically relatively to the latch by the traverse mechanism and adapted'to disengage the latch at a predetermined point in the traversing cycle.

2. A ring spinning and twisting machine according to claim 1, in which the said manually engageable mechanism comprises a cam, and the latch is constituted by a part of the profile of the cam.

3. A ring spinning and twisting machine according to claim 2, in which the cam is linked to a member adapted to engage operatively with the said relatively movable part during movement of the ring relative to the spindle in one direction only.

4. A ring spinning and twisting machine according to -claim'3, in which the member is an arm adapted to yield when passing the said part during movement of the ring relative to the spindle in the opposite direction.

5. A ring spinning and twisting machine according to claim 1, in which the latch is biased to engage a member attached to the ring to hold the ring displaced, andvis urged out of engagement by the said part.

References'Cited in the file or this patent UNITED STATES PATENTS 2,432,564 Elvin et al Dec. 16, 1947 FOREIGN PATENTS 710,150 Great Britain June 9, I954 

